Bypass factor in a fin-and-tube coil
Bypass factor in the airflow passing over a fin-and-tube coil is an important parameter in the design and performance of heat-exchange systems. This factor represents the portion of the air stream that passes through the coil without effective contact with the heat-transfer surfaces (i.e., through the fins and tubes) and therefore does not participate in heat exchange, relative to the total airflow. Bypass is especially likely in fin-and-tube coils with improper fin arrangement, uneven fin spacing, or high air velocities,...
